GC_MakeArcOfCircle Class Reference

Implements construction algorithms for an arc of circle in 3D space. The result is a Geom_TrimmedCurve curve. A MakeArcOfCircle object provides a framework for: More...

#include <GC_MakeArcOfCircle.hxx>

Inheritance diagram for GC_MakeArcOfCircle:

Public Member Functions
	GC_MakeArcOfCircle (const gp_Circ &theCirc, const double theAlpha1, const double theAlpha2, const bool theSense)
	Creates an arc of circle from angular bounds.
	GC_MakeArcOfCircle (const gp_Circ &theCirc, const gp_Pnt &theP, const double theAlpha, const bool theSense)
	Creates an arc of circle from a point and an angular bound.
	GC_MakeArcOfCircle (const gp_Circ &theCirc, const gp_Pnt &theP1, const gp_Pnt &theP2, const bool theSense)
	Creates an arc of circle from two points on the circle.
	GC_MakeArcOfCircle (const gp_Pnt &theP1, const gp_Pnt &theP2, const gp_Pnt &theP3)
	Creates an arc of circle passing through three points.
	GC_MakeArcOfCircle (const gp_Pnt &theP1, const gp_Vec &theV, const gp_Pnt &theP2)
	Creates an arc of circle from two points and a tangent at the first point.
const occ::handle< Geom_TrimmedCurve > &	Value () const
	Returns the constructed arc of circle. Exceptions StdFail_NotDone if no arc of circle is constructed.
	operator const occ::handle< Geom_TrimmedCurve > & () const
	Conversion operator returning the constructed object.
Public Member Functions inherited from GC_Root
bool	IsDone () const
	Returns true if the construction is successful.
bool	IsError () const
	Returns true if the construction has failed.
gce_ErrorType	Status () const
	Returns the status of the construction:

Additional Inherited Members
Protected Attributes inherited from GC_Root
gce_ErrorType	TheError

Detailed Description

Implements construction algorithms for an arc of circle in 3D space. The result is a Geom_TrimmedCurve curve. A MakeArcOfCircle object provides a framework for:

• defining the construction of the arc of circle,
• implementing the construction algorithm, and
• consulting the results. In particular, the Value function returns the constructed arc of circle.

Constructor & Destructor Documentation

GC_MakeArcOfCircle() [1/5]

GC_MakeArcOfCircle::GC_MakeArcOfCircle	(	const gp_Circ &	theCirc,
		const double	theAlpha1,
		const double	theAlpha2,
		const bool	theSense )

Creates an arc of circle from angular bounds.

Parameters

[in]	theCirc	source circle
[in]	theAlpha1	first angle (radians)
[in]	theAlpha2	second angle (radians)
[in]	theSense	orientation of resulting arc

GC_MakeArcOfCircle() [2/5]

GC_MakeArcOfCircle::GC_MakeArcOfCircle	(	const gp_Circ &	theCirc,
		const gp_Pnt &	theP,
		const double	theAlpha,
		const bool	theSense )

Creates an arc of circle from a point and an angular bound.

Parameters

[in]	theCirc	source circle
[in]	theP	point on circle
[in]	theAlpha	target angle (radians)
[in]	theSense	orientation of resulting arc

GC_MakeArcOfCircle() [3/5]

GC_MakeArcOfCircle::GC_MakeArcOfCircle	(	const gp_Circ &	theCirc,
		const gp_Pnt &	theP1,
		const gp_Pnt &	theP2,
		const bool	theSense )

Creates an arc of circle from two points on the circle.

Parameters

[in]	theCirc	source circle
[in]	theP1	first point on circle
[in]	theP2	second point on circle
[in]	theSense	orientation of resulting arc

GC_MakeArcOfCircle() [4/5]

GC_MakeArcOfCircle::GC_MakeArcOfCircle	(	const gp_Pnt &	theP1,
		const gp_Pnt &	theP2,
		const gp_Pnt &	theP3 )

Creates an arc of circle passing through three points.

Parameters

[in]	theP1	first point
[in]	theP2	second point
[in]	theP3	third point

GC_MakeArcOfCircle() [5/5]

GC_MakeArcOfCircle::GC_MakeArcOfCircle	(	const gp_Pnt &	theP1,
		const gp_Vec &	theV,
		const gp_Pnt &	theP2 )

Creates an arc of circle from two points and a tangent at the first point.

Parameters

[in]	theP1	start point
[in]	theV	tangent vector at start point
[in]	theP2	end point

Note

The tangent direction is given by the input vector. The orientation of the arc is:

• the sense determined by the order of the three input points;
• the sense defined by the input vector; or
• for the other constructors:
• the sense of the source circle if the orientation flag is true, or
• the opposite sense if theSense is false.

Angles are expressed in radians.

Construction fails with gce_ConfusedPoints if theP1 and theP2 are coincident.

Construction fails with gce_IntersectionError if the supporting lines used to define circle center do not intersect.

Member Function Documentation

operator const occ::handle< Geom_TrimmedCurve > &()

GC_MakeArcOfCircle::operator const occ::handle< Geom_TrimmedCurve > & ( ) const

inline

Conversion operator returning the constructed object.

Returns

resulting object

Value()

const occ::handle< Geom_TrimmedCurve > & GC_MakeArcOfCircle::Value

(

)

const

Returns the constructed arc of circle. Exceptions StdFail_NotDone if no arc of circle is constructed.

Returns

resulting arc

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The documentation for this class was generated from the following file:

• GC_MakeArcOfCircle.hxx